Collar stain protector



FIG. 1 is an isometric view of a collar stain protector showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a front elevational view of a rear panel of the design; and

FIG. 4 is a right elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a front elevational view showing my design in its operating environment.

The broken lines depict environment only and form no part of the claimed design. 

CLAIM The ornamental design for collar stain protector, as shown and described. 